You have to compare apples to apples.

Bitcoin adoption to the whole world population will also take decades.

Development is never stagnant, so lightning can scale over that same time frame according to you - with solutions coming to fruition.

Cashu is not custodial in the laymen sense, it's not good to mislabel things within this conversation.

& again, just because all the solutions don't exist yet - doesn't mean we should waive the white flag & say custodial options will win out - that's just probabilistically untrue - I'll take the field.

But...

Since on-chain scaling is the issue at hand, please tell me - what's the daily TX count that makes it not possible for it to scale any further?